Flush type nozzle



Sept 29, 1964 G. E. sPEcHT ETAL.

FLUSH TYPE NOZZLE Filed May 15, 1965 24* nusu sls OPEN F/GJB FIG. /A

INVENTORS GLENN E SPECHT WELTON A. HOTT g 2 ATTORNEY Sept- 29, 1954 G. E. sPEcHT r-:TAL 3,150,829

FLUSH TYPE NozzLE Filed May 13, 1963 2 Sheets-Sheet 2 INVENTORS GLENN E. SPEGHT WELTON A. H077' United States Patent O 3,150,829 FLUSH TYPE NOZZLE Glenn E. Specht, Charles Town, and Welten A. Hott, Summit Point, W. Va., assignors to Powhatan Brass d: Iron Works, Ranson, W. Va., a corporation of West Virginia Filed May 13, 1963, Ser. No. 279,77@ 6 Claims. (Cl. 239-167) This invention pertains to a lire lighting apparatus, and more specifically to a lire hose nozzle wherein selective stream shapes are available for appplication to a fire.

A principal objective of this invention is to provide a fire nozzle of the type described wherein the nozzle may be llushed of foreign matter by greatly increasing the outlet cross-section without removing the lluid power from the nozzle itself.

Another objective of the invention is to provide an adjustable stream nozzle of the type described wherein the same manual manipulation required to change the stream pattern is also used to manipulate the fiushing apparatus.

In lire lighting apparatus of this type, it is conventional to have apparatus for adjusting the water stream from a straight stream position to a wide angle fog position by providing a baille head which is a selected distance from the end of the nozzle body. This space is a restricting orifice which is determinative of the volume or rate of flow through the nozzle. The nozzle stream configuration or pattern is shaped by providing a slidable sleeve surrounding this restricting orifice. The invention described herein has, as another of its objectives, a lire fighting nozzle wherein the gallonage, or volume or" water per time rate, remains constant during the period the nozzle is in use except for those periods when it is desired to flush the interior of the valve by opening the restricted orifice.

Since re fighting equipment is oftentimes used with water supplies which include dirt, pebbles, and other foreign material which can lodge themselves within the interior of the nozzle, it is of prime consideration to provide means for quickly purging such a nozzle of this foreign material. An important objective of the invention, therefore, is to provide a means whereby the interior of the valves may be almost instantaneously flushed without interrupting the flow of water through the nozzle.

A still further objective of the invention is to provide a nozzle wherein the baille head is maintained in iixed relationship with a flushing collar for determining gallonage during operation, used in combination with a contour control sleeve which is rotatably mounted to the nozzle body for longitudinal movement for shaping the stream pattern, and said rotative movement is effective to urge the flushing collar away from the battle at one extreme of said adjustable movement.

Another objective of the invention is to provide a lire lighting nozzle having constant gallonage in all stream pattern positions, easy finger tip adjustment of the stream patterns at either low or high pressures which range from a type far reaching straight stream position to a dense ninety degree line mist fog position, with further means where the efficient operation thereof is not interrupted by foreign materials since the interior of the nozzle can be flushed without interrupting the stream flow.

These and other important objectives and advantages of the invention will be more fully understood upon a reading of the following specifications taken in View of the attached drawings, wherein:

FIGURE la is a plan view of the invention showing the exterior thereof in the straight stream position;

FIGURE lb is a plan View showing the nozzle elements in an intermediate stream pattern position;

Patented Sept. 29, i964 ICC FIGURE lc is a plan View showing the nozzle in its extreme rotative or llush position;

FIGURE 2 is a cross-section through the interior ofthe nozzle showing the elements in their straight stream position;

FIGURE 3 is a partial cross-section showing the elements in their ninety degree fog position; and

FlGURE 4 is a partial cross-section showing the elements in their nozzle flush position.

Referring now to the drawings wherein like elements indicate like parts, the numeral l@ indicates a body housing having an inlet end l2 and an outlet end i4. The intake end is provided with a threaded swivel lo which is adapted to be connected to a conventional threaded water supply hose. Intermediate its end the body 10 is also provided with a ball shut olf valve l which is activated by the man sized handle 2li. Ball valves and handles of this type are conventional in lire lighting apparatus.

Telescopically received about the outer end of the body l0 is a stream pattern forming sleeve 24 which is interiorally threaded intermediate its ends at 26 for mating with threads 23 on the exterior of the body lil. Sleeve 24 is provided with a rubber lmurled knob 1S for easy linger tip control. The exterior of body l@ is formed with an annular recess 3i? and an opposing recess 32 along the interior of sleeve 24 which together form a chamber 34 in which an inner portion 35 of a flush collar 36 is slidably received. The inner portion is formed with an outward flange 38 against which a biasing spring 4l) is urged. A counterbore 39 formed in the body 10, and in communication with the recess 30, receives the other end of spring 4h. The bottom of recess 30 is further reduced at il which reduced portion slidably receives a plurality of pins 4Z carried by the flush collar 36. Forward and rearward movement of the collar relative to the nozzle body is limited by the pins as they abut forward shoulder 43 or rear shoulder 4S.

Interiorally of the body housing is a spider support 44 which threadably receives a shaft 46 of a baille head 50. The baille head shaft 46 is secured to the spider by means of lock nut 52.

The forward end of liush collar 36 is formed with an inwardly directed gallonage control flange 54 which forms, with the baille head Si), an annular outlet 56 of constant dimension while the hose is in operation. The fluid pattern is controlled by the relative relationship of the inner surface 6l) of the stream forming sleeve 24 with the outlet 56. Referring to FlG. 2, it will be understood that fluid under pressure from the interior of the nozzle will pass through outlet 56, be deflected by the bafflehead 50 and surface 6l) and thus be directed to the straight stream position as indicated by the arrows. When sleeve 24 is retracted to the position shown in FIG. 3, the stream will be urged to a ninety degree fog position which is shown by the arrows in FIG. 3. This is true because the straight stream forming surface 6ft of the sleeve 2- is not effective on the stream after it has been deflected by the baille head. Teeth 66 on sleeve 24 are provided to further particulate the stream for a better fog pattern.

As seen in FIG. 4, the flange 54 of collar 36 can be moved rearwardly of the baille head to greatly enlarge the orifice 56. Referring to FIG. 3, as the sleeve 24 is moved to the left, the step 70 forming the forward edge of the recess 32 engages the flange 38. Further rotative movement imparted to the sleeve causes the flush collar to move to the left against the bias of the spring 4t). Thus the stream forming sleeve 24 carries the flush collar rearwardly to the position shown in FIG. 4. This greatly enlarges the outlet 56 and permits the iluid stream flowing from the interior of the nozzle to flush pebbles and other foreign particles. In order to place the valve back to one of the intermediate operative positions the stream forming sleeve must merely be rotated clockwise away from the ushing position. It can, therefore, be seen that the ushing action takes place without stopping liuid ow.

Since operation of the ilushing apparatus is accomplished by the same rotative movement lto vary stream pattern, one operator can easily liush his nozzle by merely supporting the hose in one hand and rotating the sleeve to the flush position with his other hand.

As seen in FIGS. la, lb, and lc, the body is marked with an arrow 72 which is directed toward a plurality of selected scored positions on sleeve 24 as indicated by the marks SS, 60, 90 and Fiush. Assuming that the SS position was the normal operating position, the elements of the nozzle assembly are arranged as seen in FiG. 2; that is, the stream forming sleeve is at its extreme outer position with surface 60 directing all flow forwardly in a straight line. By rotating the sleeve as indicated by the arrow 74 in FIG. lb to the 60 position, the forming sleeve is positioned intermediate the arrangement shown in FIG. 2.

The 90 position is shown in FlG. 3. Continuing the counterclockwise movement approximately 360 turns the sleeve to the Flush position as indicated in FIG. 1c. In the Flush position the flush sleeve has been carried away from the baffle and the interior of the nozzle can be cleaned by the water pressure itself.

To enable the operator to feel the movement of sleeve 24, the outer surface of the body it) is formed with a plurality of circumferentially disposed detents 82 corresponding to, but offset from, the position markings. The sleeve 24 carries the spring urged detent ball 85 which is forced into one of the depressions when it is opposing same. The depressions therefore are spirally arranged in accordance with the angle of threads 26 and 28.

In a general manner, while there has been disclosed an effective and emcient embodiment of the invention, it should be well understood that the invention is not limited to such an embodiment, as there might be changes made in the arrangement, disposition, and form of the parts without departing from the principle of the present invention as comprehended within the scope of the accompanying claims.

We claim:

l. A nozzle of the fire fighting type comprising a body forming a conduit having an inlet end and an outer end, a sleeve telescopicaily received about said body having a stream forming portion extending beyond said outer end and said sleeve and body forming a chamber therebetween, said body and sleeve including coacting means to cause relative longitudinal movement upon relative rotation thereof, a baie carried by said body, a Hush collar having a first part slidably received in said Chamber and a second annular outer part forming an annular outlet with said baie, a spring in said chamber biasing said ush collar toward said bao, and second means for causing said flush collar to move away from said baiiie when said stream forming sleeve is at one extreme of said coacting adjustment means, whereby the size of said annular outlet is increased.

2. A nozzle of the re lighting type comprising a body forming a conduit having an inlet and an outer end, a sleeve telescopically received about said body having a stream forming portion extending beyond said outer end and said sleeve and body forming a chamber therebetween, said body and sleeve including coacting means to cause relative longitudinal movement upon relative rotation thereof between a first position and a second position, wherein said portion is closer to said outer end than in said first position, a baffle carried by said body, a ush sleeve having a first part slidably received in said chamber and a second annular outer part forming an annular outlet with said batiie, a spring in said chamber biasing said iiush sleeve toward said baffle, and second means for causing said fiush sleeve to move away from said bafe with i said stream forming sleeve when said coacting means cause movement beyond said second position.

3. A nozzle of the lire fighting type comprising a body forming a conduit having an inlet end and an outer end, a sleeve telescopically received about said body having a stream forming portion extending beyond said outer end, said sleeve and body forming a chamber therebetween, a baiiie carried by said body, said body and sleeve including coacting means to cause relative longitudinal movement upon relative rotation thereof to a first position wherein said sleeve surrounds said baille to a second position wherein said sleeve is moved rearwardly of said bafiie, a iiush sleeve having a first part slidably received in said chamber and a second annular outer part extending beyond said outer end and forming an annular outlet with said batlie, a spring in said chamber biasing said iiush sleeve toward said baflie, and second means for causing said iush sleeve to move away from said baiiie when said stream forming sleeve is moved inwardly beyond said second position. f

4. A nozzle of the tire ghting type comprising a body forming a conduit having an inlet end and an outer end, a sleeve telescopically received about said body having a stream forming portion extending beyond said outer end, said sleeve and body forming a chamber between their telescoping portions, a baffle carried by said body, said body and sleeve including coacting means to cause relative longitudinal movement upon relative rotation thereof to a iirst position wherein said stream forming portion surrounds the greatest diameter section of said battle to a second position wherein said sleeve is moved rearwardly of said greatest diameter section, a flush sleeve having a rearward part slidably received in said chamber and a forward annular outer part extending beyond said outer end and forming an annular outlet with said batlie, a spring in said chamber biasing said iiush sleeve toward said batiie, and second means for causing said flush sleeve to move away from said bafiie when said stream forming -sleeve is moved inwardly beyond said second position.

5. A nozzle of the fire fighting type comprising a body forming a conduit having an inlet end and an outer end, a sleeve telescopically received about said body having a stream forming portion extending beyond said outer end said sleeve and body forming a chamber therebetween, a baliie carried by said body, said body and sleeve including coacting means to cause relative longitudinal movement upon relative rotation thereof to a first position wherein said sleeve surrounds said bafe to a second rearward position wherein said sleeve is moved rearwardly of said baiie, a iiush sleeve having a rear part slidably received in said chamber and a forward annular outer part extending beyond said outer end and forming an annular outlet for said nozzle with said baffle, a spring in said chamber biasing said flush sleeve toward said baffle, an outwardly directed liange on said rear part, a shoulder of said sleeve engageable with said iiange as said sleeve is moved inwardly beyond said rearward position whereby said forward annular part is moved away from said baffle.

6. A nozzle of the re fighting type comprising a body forming a conduit having an inlet end and an outer end, a sleeve telescopically received about said body having a stream forming portion extending beyond said outer end, said sleeve and body forming a chamber therebetween, a baffle carried by said body, said body and sleeve including coacting means to cause relative longitudinal movement upon relative rotation thereof to a iirst position wherein said sleeve surrounds said baiile to a second position wherein said sleeve is moved rearwardly of said battle, a flush sleeve having a first part slidably received in said chamber and a second annular outer part extending beyond said outer end and forming an annular outlet for said nozzle with said baiiie, a spring in said chamber bias` ing said iiush sleeve toward said baflle, an outwardly directed flange on said rear part, a shoulder of said sleeve engageable with said Harige as said sleeve is moved inwardly beyond said rearward position whereby said forward annular part is moved away from said bathe, a recess in said chamber defined by forward and rearward ledges, at least one pin carried by said lush sleeve and extending into said recess Such that the forward and rearward movement of said flush sleeve is limited by said pin engaging either of said ledges.

References Cited in the le of this patent UNITED STATES PATENTS Nielsen May 8, 1951 Russell Dec. 17, 1957 Thompson May 17, 1960 Allenbaugh May 31, 1960 Allenbaugh July 4, 1961 Allenbaugh Dec. 12, 1961 

1. A NOZZLE OF THE FIRE FIGHTING TYPE COMPRISING A BODY FORMING A CONDUIT HAVING AN INLET END AND AN OUTER END, A SLEEVE TELESCOPICALLY RECEIVED ABOUT SAID BODY HAVING A STREAM FORMING PORTION EXTENDING BEYOND SAID OUTER END AND SAID SLEEVE AND BODY FORMING A CHAMBER THEREBETWEEN, SAID BODY AND SLEEVE INCLUDING COACTING MEANS TO CAUSE RELATIVE LONGITUDINAL MOVEMENT UPON RELATIVE ROTATION THEREOF, A BAFFLE CARRIED BY SAID BODY, A FLUSH COLLAR HAVING A FIRST PART SLIDABLY RECEIVED IN SAID CHAMBER AND A SECOND ANNULAR OUTER PART FORMING AN ANNULAR OUTLET WITH SAID BAFFLE, A SPRING IN SAID CHAMBER BIASING SAID FLUSH COLLAR TOWARD SAID BAFFLE, AND SECOND MEANS FOR CAUSING SAID FLUSH COLLAR TO MOVE AWAY FROM SAID BAFFLE WHEN SAID STREAM FORMING SLEEVE IS AT ONE EXTREME OF SAID COACTING ADJUSTMENT MEANS, WHEREBY THE SIZE OF SAID ANNULAR OUTLET IS INCREASED. 